Flexi Says: Glaciers grow when more snow falls near the top of the glacier, in the zone of accumulation, than is melted from lower down in the glacier, in the zone of ablation. These two zones are separated by the equilibrium line. Summer temperatures have risen rapidly and so the rate of snow melting has picked up. Once winter snowfall decreases, or summer melt increases, the glacier will begin to melt and no longer moves, it is called an ice sheet.
